installed plugin W3 Total Cache version 2.3.2

wp-content/plugins/w3-total-cache/Util_Installed.php

@@ -0,0 +1,156 @@
+<?php
+namespace W3TC;
+
+/**
+ * Checks if different server modules are enabled and installed
+ */
+class Util_Installed {
+	static public function opcache() {
+		return function_exists( 'opcache_reset' ) && ini_get( 'opcache.enable' );
+	}
+
+	static public function apc() {
+		return function_exists( 'apc_store' ) || function_exists( 'apcu_store' );
+	}
+
+	static public function apc_opcache() {
+		return function_exists( 'apc_compile_file' ) && ini_get( 'apc.enable' );
+	}
+
+	public static function is_opcache_validate_timestamps() {
+		return  ini_get( 'opcache.validate_timestamps' );
+	}
+
+	public static function is_apc_validate_timestamps() {
+		return ini_get( 'apc.stat' );
+	}
+
+	static public function curl() {
+		return function_exists( 'curl_init' );
+	}
+
+
+
+	static public function eaccelerator() {
+		return function_exists( 'eaccelerator_put' );
+	}
+
+
+
+	static public function ftp() {
+		return function_exists( 'ftp_connect' );
+	}
+
+
+
+	static public function memcached_auth() {
+		static $r = null;
+		if ( is_null( $r ) ) {
+			if ( !class_exists( '\Memcached' ) )
+				$r = false;
+			else {
+				$o = new \Memcached();
+				$r = method_exists( $o, 'setSaslAuthData' );
+			}
+		}
+
+		return $r;
+	}
+
+
+
+	static public function memcached() {
+		return class_exists( 'Memcache' ) || class_exists( 'Memcached' );
+	}
+
+
+
+	static public function memcached_memcached() {
+		return class_exists( 'Memcached' );
+	}
+
+
+
+	static public function memcached_aws() {
+		return class_exists( '\Memcached' ) &&
+			defined( '\Memcached::OPT_CLIENT_MODE' ) &&
+			defined( '\Memcached::DYNAMIC_CLIENT_MODE' );
+	}
+
+
+
+	static function memcache_auth() {
+		static $r = null;
+		if ( is_null( $r ) ) {
+			if ( !class_exists( '\Memcached' ) )
+				$r = false;
+			else {
+				$o = new \Memcached();
+				$r = method_exists( $o, 'setSaslAuthData' );
+			}
+		}
+
+		return $r;
+	}
+
+
+
+	static public function redis() {
+		return class_exists( 'Redis' );
+	}
+
+
+
+	static public function tidy() {
+		return class_exists( 'tidy' );
+	}
+
+
+
+	static public function wincache() {
+		return function_exists( 'wincache_ucache_set' );
+	}
+
+
+
+	static public function xcache() {
+		return function_exists( 'xcache_set' );
+	}
+
+
+
+	/**
+	 * Check if memcache is available
+	 *
+	 * @param array   $servers
+	 * @param boolean $binary_protocol
+	 * @param string  $username
+	 * @param string  $password
+	 * @return boolean
+	 */
+	static public function is_memcache_available( $servers, $binary_protocol, $username, $password ) {
+		static $results = array();
+
+		$key = md5( implode( '', $servers ) );
+
+		if ( !isset( $results[$key] ) ) {
+			$memcached = Cache::instance( 'memcached', array(
+					'servers' => $servers,
+					'persistent' => false,
+					'binary_protocol' => $binary_protocol,
+					'username' => $username,
+					'password' => $password
+				) );
+			if ( is_null( $memcached ) )
+				return false;
+
+			$test_string = sprintf( 'test_' . md5( time() ) );
+			$test_value = array( 'content' => $test_string );
+			$memcached->set( $test_string, $test_value, 60 );
+			$test_value = $memcached->get( $test_string );
+			$results[$key] = ( $test_value['content'] == $test_string );
+		}
+
+		return $results[$key];
+	}
+}